Poursaitidis was born in Drama, Macedonia, Greece, on June 23, 1976. He started playing at local club Doxa as an amateur. In 1993, he joined Veria FC as a professional. After three years, he made the big jump to Olympiakos where he stayed for three more years. Afterwards, he signed with SKODA Xanthi.
- Digenis Morfou (2002 - 2004)
- Ethnikos Achna (2004 - 2005)
- Anorthosis Ammochostos (2005 - 2008)
- APOEL (2008 - present)
Poursaitidis plays either at right back or in the midfield.